100822 has 4 divisors (see below), whose sum is σ = 151236. Its totient is φ = 50410.

The previous prime is 100811. The next prime is 100823. The reversal of 100822 is 228001.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25204 + ... + 25207.

It is an arithmetic number, because the mean of its divisors is an integer number (37809).

2¹⁰⁰⁸²² is an apocalyptic number.

100822 is a deficient number, since it is larger than the sum of its proper divisors (50414).

100822 is an equidigital number, since it uses as much as digits as its factorization.

100822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50413.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 100822 is about 317.5248021809. The cubic root of 100822 is about 46.5427209809.

Adding to 100822 its reverse (228001), we get a palindrome (328823).

It can be divided in two parts, 10082 and 2, that multiplied together give a square (20164 = 142²).

The spelling of 100822 in words is "one hundred thousand, eight hundred twenty-two".